CN102640011A - Estimating user device location in a wireless network - Google Patents

Estimating user device location in a wireless network Download PDF

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Publication number
CN102640011A
CN102640011A CN2010800422681A CN201080042268A CN102640011A CN 102640011 A CN102640011 A CN 102640011A CN 2010800422681 A CN2010800422681 A CN 2010800422681A CN 201080042268 A CN201080042268 A CN 201080042268A CN 102640011 A CN102640011 A CN 102640011A
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access point
user equipment
access points
access
channel loss
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CN2010800422681A
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Chinese (zh)
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CN102640011B (en
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史蒂文·哈尔
史蒂文·贝尼斯
大卫·贝万
安德鲁·杰弗里斯
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洛克斯塔Bidco有限合伙公司
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Priority to US12/565,100 priority Critical patent/US8243626B2/en
Priority to US12/565,100 priority
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Priority to PCT/GB2010/051588 priority patent/WO2011036482A1/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0252Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves by comparing measured values with pre-stored measured or simulated values
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205Details
    • G01S5/0221Details of receivers or network of receivers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/10Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT]
    • Y02D70/14Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in Institute of Electrical and Electronics Engineers [IEEE] networks
    • Y02D70/142Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in Institute of Electrical and Electronics Engineers [IEEE] networks in Wireless Local Area Networks [WLAN]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/10Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT]
    • Y02D70/14Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in Institute of Electrical and Electronics Engineers [IEEE] networks
    • Y02D70/144Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in Institute of Electrical and Electronics Engineers [IEEE] networks in Bluetooth and Wireless Personal Area Networks [WPAN]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/10Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT]
    • Y02D70/16Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in other wireless communication networks
    • Y02D70/164Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in other wireless communication networks in Satellite Navigation receivers

Abstract

A method of estimating user location involving collecting data from the access points in the network. The data can then be used to define a relationship, for example the loss of power experienced by a transmitted signal, between the access points. The relationship can be stored within a matrix, database or any other suitable storage method that can be referenced to determine the position of a user device within the network and correlated with corresponding measurements from a user device to determine the location of the user device within the network.

Description

估计用户设备在无线网络中的位置 Estimated position of the user equipment in a wireless network

技术领域 FIELD

[0001] 本发明涉及估计用户设备在无线网络内的位置的方法。 [0001] The present invention relates to a position estimation user equipment within a wireless network method. 本发明还涉及能够估计用户设备在无线网络内的位置的装置。 The present invention also relates to a device capable of estimating the position of the user equipment within the wireless network.

背景技术 Background technique

[0002] 除了其他方面,无线网络还包括接入点和用户设备。 [0002] In addition to other aspects, further comprising a wireless network access point and a user equipment. 用户设备可以是任意具有能够利用无线网络实现无线联网的接口的设备,包括例如便携式电脑。 The user equipment may be any device having an interface capable of wireless network using a wireless network, including for example a laptop. 接入点是使得用户设备能够利用例如蓝牙或Wi-Fi接入特定无线网络的设备。 An access point is equipment that the user can utilize, for example, Bluetooth or Wi-Fi access device specific wireless network. 一旦用户设备接入无线网络,其就可以通过该网络发送和接收数据。 Once the user equipment access to the wireless network, the network on which data can be transmitted and received.

[0003] 例如,如果提供给用户设备的服务取决于用户设备在网络内的位置,则估计用户在无线网络内的位置可能是有利的。 [0003] For example, if the service provided to the user equipment depending on the location of the user equipment within the network, the estimated location of the user within the wireless network may be advantageous. 这在用户设备移动,因而网络中的组件实际上并不静止时尤其困难。 This user mobile device, so the network is not particularly difficult when the components are actually stationary.

[0004] 为了确定设备在可由移动设备接入的网络内的位置,已提出若干方案。 [0004] In order to determine the location of the device within the network by the mobile device access, a number of solutions have been proposed. 这些方案包括RF指纹识别、到达时间三边测量以及GPS设备在移动设备上的使用。 These include RF fingerprinting, trilateration arrival time and the GPS device on the mobile device.

[0005] RF指纹识别包括勘察由无线网络覆盖的区域以及评价在该区域内的某些点处的RF频谱。 [0005] RF fingerprinting including survey and evaluation region covered by the wireless network in the RF spectrum at certain points in the region. 系统或移动单元本身可以确定用户设备的RF频谱,并将其与通过勘察所测量的区域中的不同点的RF频谱进行比较。 System or the mobile unit itself may determine that the user equipment RF spectrum, and compares the differences of the RF spectrum measured by the survey area. 该比较可以用于限定用户设备处于网络中的什么位置。 The comparison may be used to define in what position a user equipment in the network. 然而,该位置确定的方法需要资源来确定区域内的点的所接收RF频谱。 However, the method of determining the position of the received RF spectrum resources are needed to determine the point in the region. 此外,区域的RF环境中的动力学可能改变,从而增加位置估计的误差。 In addition, the kinetics of the RF environment may change region, thereby increasing the error in the position estimate.

[0006] 到达时间三边测量包括接入点确定从用户设备到接入点的传输的飞行时间。 [0006] The time of arrival trilateration access point comprises determining the flight time of transmission from the user equipment to the access point. 根据该飞行时间可以确定离接入点的距离,并且这些距离的汇合点是用户设备的位置的估计。 The time of flight of the access point may determine the distance, and the convergence of these distances are estimated location of the user equipment. 然而,利用到达时间三边测量精确地估计位置需要用户设备能够与网络中的至少三个接入点进行通信,这可能意味着估计位置所需的接入点数目大于服务该网络所需的接入点数目。 However, with the time of arrival trilateration need to accurately estimate the position of the user devices to communicate with a network of at least three access points, which may mean number of access points required to estimate the desired position is greater than the network connection service the number of points. 另外,由于用户设备上的时钟和接入点上的时钟之差导致时间误差,从而导致位置、估计误差,因而时间的估计必须精确。 Further, since the difference on the clock and the clock of the access point on the user device results in a time error, resulting in a position estimation error, and thus time it must be precisely estimated.

[0007] 最后,GRS接收机或其他位置确定装备在用户设备中的使用可以用于确定用户设备的位置。 [0007] Finally, GRS receiver or other position determination equipment used in the user equipment may be used to determine the location of the user equipment. 然而,这取决于用户设备所位于的点处的卫星的能见度,这在建筑物内是不可能的。 However, depending on the satellite at the point of the user equipment is located visibility, which is not possible in the building. 给每个用户设备配备GPS接收机也会是浪费的。 To each user device is equipped with a GPS receiver it will be wasted.

[0008] 因此,期望具有一种估计用户设备在无线网络中的位置的改进方法。 [0008] Accordingly, it is desirable to have an improved method for location of a user equipment in a wireless network estimates.

发明内容 SUMMARY

[0009] 根据本发明的一个方面,提供一种估计用户设备在无线网络中的位置的方法,所述无线网络包括多个接入点,所述方法包括以下步骤:确定所述用户设备与所述多个接入点中的一个接入点之间的信道损耗;计算所述多个接入点中的至少一个接入点的相关值,接入点的所述相关值为以下信道损耗之间的相关性的度量:所述用户设备与所述多个接入点中的至少一个接入点之间的信道损耗,和所述接入点与所述多个接入点中的每个接入点之间的信道损耗;并且根据至少一个接入点的已知位置和所述至少一个接入点的所述相关值,估计所述用户设备的位置。 [0009] In accordance with one aspect of the invention, there is provided a method of estimating the position of a user equipment in a wireless network, said wireless network comprising a plurality of access points, said method comprising the steps of: determining the user equipment and the said channel loss between a plurality of access points the access point; calculating the correlation values ​​of the plurality of access points at least one access point, the access point correlation value of the channel loss measure of a correlation between: the user equipment and the access points at least one of channel loss between the access point and the access point and the access points each channel loss between the access point; and according to at least one access point and the known location of the at least one access point of the correlation value, the estimated location of the user equipment.

[0010] 该信道损耗可以是归属于与在网络上传输的信号的功耗成比例的任意特征的测量结果。 [0010] The channel may be attributed to the loss measurements with any of the features of the power consumption is proportional to the signals transmitted on the network. 例如,假设信号的所传输功率对于网络内的所有接入点都相同,则其可以是在两个接入点之间传输的信号的所接收功率。 For example, assuming the transmitted signal power for all access points within the same network, it may be the received power of signals transmitted between the two access points. 可替代地,其可以是相同信号的信噪比,或者信号的、通过从传输信号的功率中减去由接入点接收的信号的功率而计算出的所估计功耗。 Alternatively, it may be the same signal to noise ratio, or signal, is calculated by subtracting the signals received by the access point from the power of the transmission signal power estimated power consumption.

[0011] 可选地,该方法可以包括以下步骤:对所述接入点和所述多个接入点中的每个接入点的计算出的信道损耗进行归一化以确定归一化后的接入点信道损耗,并且对所述用户设备与所述多个接入点中的至少一个接入点之间的信道损耗进行归一化以确定归一化后的用户设备信道损耗,其中所述相关值为归一化后的接入点信道损耗和归一化后的用户设备信道损耗的度量。 [0011] Alternatively, the method may comprise the steps of: comparing the calculated channel loss plurality of the access point and the access points each access point is normalized to determine a normalization after the access point channel loss, and loss of the channel between the user equipment and the access points at least one access point is normalized to determine a user equipment channel loss after normalization, wherein the correlation metric access point channel loss value after normalization and the user equipment normalized channel loss. 通过对信道路径损耗进行归一化(即,针对接入点的路径损耗的集合关于平均信道损耗重新调整值),可以基于路径损耗的模式匹配找到有意义的相关值。 Through the channel path loss is normalized (i.e., the access point for the path loss on the set of average values ​​to re-adjust the channel loss) can be matched to find meaningful correlation value based on the path loss model. 相关值应当在I到-I之间。 I should correlation value between -I.

[0012] 估计所述用户位置可包括在估计所述用户设备的位置之前对所述相关值进行归一化。 [0012] estimating the user position may include normalizing the correlation values ​​prior to estimating the position of the user equipment. 进一步,估计所述用户设备的位置包括将每个接入点的矢量位置乘以该接入点的归一化后相关值,并且将加权后的矢量位置一起相加。 Further, estimating the location of the user equipment comprises the vector position of each access point is multiplied by the normalized correlation value of the access point, and adding together the weighted vector position.

[0013] 所述方法可以包括以下步骤:确定所述用户设备与所述多个接入点中的一数目的接入点之间的信道损耗的集合,并且通过测量信道损耗的所述集合和信道损耗的另一集合来计算相关值,信道损耗的所述另一集合为所述接入点与所述多个接入点之间的信道损耗的集合。 [0013] The method may comprise the steps of: determining a set of channel loss between the user equipment and the plurality of access points in a number of access points, and by measuring the loss of the set channel, and another set of the calculated correlation values, channel loss channel loss is set to another set between the access point and the access points of the channel loss.

[0014] 可以利用所选择数目的多个接入点而不是来自网络中所有接入点的测量结果来估计用户设备的位置。 [0014] may be estimated position of the user device using the selected number of the plurality of access points instead of measuring results from all access points in the network. 所选择的接入点可以是例如位于使得其能够从所述用户设备接收信号的位置的所述接入点,或者与所述用户设备信道损耗具有最大相关值的所述数目的接入点。 The access point may be selected such that it can be located, for example, the access point from the location of the user equipment received signal, the user equipment or loss of channel number of access points having the maximum correlation value.

[0015] 有利地,可以计算多个相关值。 [0015] Advantageously, a plurality of correlation values ​​may be calculated. 每个相关值在用户设备与网络中不同接入点之间。 Each correlation value between different access points in the network in the user equipment. 进一步,可以计算用户设备的信道损耗值的集合,每个信道损耗值在用户设备与接入点集合中的不同接入点之间。 Further, the user computing device can be a set of channel loss value, loss value for each channel in the user equipment and the access point set between different access points. 相关值可以是针对用户设备计算的信道损耗值的集合和每个接入点与相对应接入点集合之间的信道损耗值的集合之间的相关性。 Correlation value may be a correlation between each access point and the set value of the channel loss for the user of the computing device corresponding to the set value of the channel loss between the set of access points.

[0016] 可选地,无线网络可以被配备有传感器或传感器集。 [0016] Alternatively, the wireless network can be equipped with a sensor or set of sensors. 在这种情况下,所形成的相关值为以下信道损耗之间的相关性的度量:所述用户设备与所述多个接入点中的至少一个接入点之间的信道损耗,和所述接入点与所述多个接入点中的每个接入点和传感器之间的信道损耗。 Measure of a correlation between a correlation value of the channel loss in this case, formed by: the user equipment and the access points at least one of channel loss between the access point, and the each channel loss between the access point and the access point and the sensor of said plurality of access points.

[0017] 可替代地,所述方法可以包括:确定从用户设备到多个接入点之一的传输的到达角度,根据在用户设备与所述多个接入点之一之间传输的信号的功耗来估计用户设备离所述多个接入点之一的距离,并且利用到达角度和所确定的距离来估计用户设备的位置。 [0017] Alternatively, the method may include: determining the angle of arrival of transmissions from the user equipment to one of a plurality of access points, signal transfer points between one of the user equipment according to the plurality of access power consumption estimating apparatus estimates the distance from the user of one of said plurality of access points, and using the determined angle of arrival and the distance to the position of the user equipment. 针对具有最高相关值的两个接入点利用任意合适的方法来计算到达角度。 Angle of arrival calculated by any suitable method for the two access points having the highest correlation value.

[0018] 可选地,可以计算置信值用于用户位置的估计。 [0018] Alternatively, the confidence value may be calculated for the estimated position of the user. 该置信值可以基于例如信道损耗测量结果的误差值或估计用户设备所位于的区域的尺寸。 The confidence value may be based on size of the region of the channel loss measurement error or estimates of the user equipment is located, for example.

[0019] 根据本发明的第二方面,提供一种被配置为估计用户设备在无线网络中的位置的装置,所述无线网络包括用户设备和多个接入点,所述装置被配置为:确定所述用户设备与所述多个接入点中的至少一个接入点之间的信道损耗;计算所述多个接入点中的至少一个接入点的相关值,接入点的所述相关值为以下信道损耗之间的相关性的度量:所述用户设备与所述多个接入点中的至少一个接入点之间的信道损耗,和所述接入点与所述多个接入点中的每个接入点之间的信道损耗;并且根据至少一个接入点的已知位置和所述至少一个接入点的所述相关值,估计所述用户设备的位置。 [0019] According to a second aspect of the present invention, there is provided an apparatus configured to estimate the location of a user equipment in a wireless network, said wireless network comprising a user equipment and a plurality of access points, the apparatus being configured to: the calculation of the plurality of access points at least one access point correlation value, the access point; determining the user equipment and the access points at least one of channel loss between the access point measure of a correlation between a channel correlation value of said losses the following: the user equipment and the access points at least one of channel loss between the access point and the access point and the plurality channel loss between the access points each access point; and according to at least one access point and the known location of the at least one access point of the correlation value, the estimated location of the user equipment.

[0020] 所述装置可以为网络控制器。 The [0020] device may be a network controller.

[0021] 可选地,所述装置可以包括被配置为接收路径所接收信号强度的测量结果的输入设备,并且使用所接收信号强度的所述测量结果以计算信道损耗。 [0021] Alternatively, the device may be configured to include a signal strength measurement for the reception path received by the input device, and using the measurement result of the received signal strength to calculate a channel impairments. 所述装置可以包括接入点(具有已知位置)和所述网络中每个接入点与所述多个接入点之间的信道损耗的数据库。 The apparatus may include an access point (having a known position) and in the channel between the network access point and each of the plurality of access points losses database. [0022] 根据本发明的方面,提供一种存储在计算机可读介质上的计算机程序,当在装置上执行时,该计算机程序使所述装置执行以下步骤:确定所述用户设备与所述多个接入点中的一个接入点之间的信道损耗;计算所述多个接入点中的至少一个接入点的相关值,接入点的所述相关值为以下信道损耗之间的相关性的度量:所述用户设备与所述多个接入点中的至少一个接入点之间的信道损耗,和所述接入点与所述多个接入点中的每个接入点之间的信道损耗;并且根据至少一个接入点的已知位置和所述至少一个接入点的所述相关值,估计所述用户设备的位置。 [0022] According to an aspect of the present invention, there is provided a computer program stored on a computer-readable medium, when executed on the device, the computer program causing the apparatus to perform the steps of: determining the user equipment and the plurality channel between the access points in the access point a loss; the correlation value calculation between the plurality of access points at least one access point, the access point correlation value of the channel loss measure of the correlation of: the user equipment and the access points at least one of channel loss between the access point and the access point and the access points each access channel loss between the points; and according to at least one access point and the known location of the at least one access point of the correlation value, the estimated location of the user equipment.

附图说明 BRIEF DESCRIPTION

[0023] 通过回顾以下结合附图的本发明特定实施例的描述,本发明的其他方法和特征对于本领域普通技术人员来说将变得明显。 [0023] The described embodiments of the present invention by a specific review of the following drawings in conjunction with embodiments, other methods and features of the present invention to those of ordinary skill in the art will become apparent.

[0024] 图I示出可实现本发明的无线网络; [0024] FIG I shows the present invention may be implemented in a wireless network;

[0025] 图2为根据本发明的方法的流程图; [0025] FIG 2 is a flowchart of a method according to the invention;

[0026] 图3示出在接入点之间测得的功耗的归一化; [0026] FIG. 3 shows an access point between the measured power normalization;

[0027] 图4示出在用户设备与接入点之间测得的功耗的归一化;以及 [0027] FIG. 4 shows a user equipment and an access point between the measured power normalization; and

[0028] 图5示出用户与系统中的每个AP和传感器的相关值集合。 [0028] FIG. 5 shows a set of correlation values ​​with each user and the AP of the sensor system.

具体实施方式 Detailed ways

[0029] 将参照单个无线网络,例如图I中示出的网络10来描述本发明。 [0029] The reference to a single wireless network, for example, Figure I shows a network 10 of the present invention will be described. 无线网络10包括多个接入点12和至少一个用户设备14。 10 comprises a plurality of wireless network access points 12 and 14 at least one user equipment. 无线网络与用户设备的连通性可以由网络控制器(未示出)来确定。 Wireless communication network and a user equipment may be performed by a network controller (not shown) is determined. 如本领域技术人员将理解的那样,接入点12和无线网络10可以以任意已知的方式来实现。 As those skilled in the art will appreciate, the access point 12 and wireless network 10 may be implemented in any known manner. 用户设备14例如可以是便携式电脑、上网本或具有能够利用无线网络实现无线联网的接口的任意其他设备。 The user equipment 14 may be, for example, a laptop, netbook, or having any wireless network interface can be implemented using other wireless networking devices. 另外,虽然结合单个无线网络描述本发明,但本领域技术人员将理解,其可以通过多个网络来实现。 Further, although a single wireless network described in conjunction with the present invention, those skilled in the art will appreciate that it may be implemented by a plurality of networks.

[0030] 方法包括从网络中的接入点收集数据。 [0030] The method includes collecting data from the network access point. 然后,该数据可以用于限定接入点之间的关系,例如由所传输信号经历的功耗。 Then, this data may be used to define the relationship between the access point, for example, by the power of the transmitted signal experienced. 该关系可以存储在矩阵、数据库中,或者以任意其他合适存储方法来存储,其可被引用来确定用户设备在网络中的位置并且与来自用户设备的相对应测量结果相关来确定用户设备在网络中的位置,如下面更详细描述的。 This relationship may be stored in a matrix, database, or in any other suitable storage method to store, which can be referenced to determine the location of a user equipment in the network and is associated with from the user equipment corresponding to the measurements to determine a user equipment in a network the position, as described in more detail below. [0031] 图2中更详细地示出该方法。 [0031] FIG. 2 shows in more detail the process. 在该方法中,网络中的每对接入点将来自该对中的一个接入点的信号传输到该对中的另一接入点。 In this method, each network access point from the signal transmitter of the pair to the one access point to another access point in the. 接入点记录传输信号的功率和接收信号的功率。 Access point and the recording power of the received signal power of the transmission signal. 然后,可以通过计算所传输信号和所接收信号之间的功率差来确定在接入点之间传输的信号的功耗(步骤20)。 Then, the power difference between the received signal and the transmitted signal can be determined by calculating the power (step 20) signal is transmitted between an access point.

[0032] 然后,关于平均功耗对无线网络中每对接入点之间的功耗进行归一化(步骤22),如图3所示。 [0032] Then, on average power consumption of a wireless network between each access point is normalized (step 22), as shown in FIG. 确定接入点的实际功耗与该接入点的平均功耗之差。 Determining the actual power consumption of the access point difference between the average power consumption of the access point. 计算出的差构成一表格,例如下面所示出的表格(步骤24)。 Calculated difference constituting a table, for example table shown below (step 24). 优选地,该表格包括表示接入点的传输到其自身的功耗的缺省值。 Preferably, this table represents a transmission comprising the access point to the default value of the power consumption itself. 这可以为零,或者可替代地为表示由直接位于接入点下面的用户设备所经历的所估计功耗的值。 This may be zero, or alternatively the power consumption value represented by the estimated access point located directly below the experienced user equipment.

[0033] [0033]

Figure CN102640011AD00071

[0034] 在构成表格之后,该表格可以用于估计用户设备在无线网络中的位置。 [0034] After the configuration table, the table may be used to estimate the location of a user equipment in a wireless network.

[0035] 为了估计用户设备在无线网络中的位置,用户设备测量由该用户设备从一个或多个接入点接收的信号的功率,并将其报告给无线网络中的网络控制器。 [0035] In order to estimate the location of a user equipment in a wireless network, the user equipment measures the power received from one or more access points signal by the user apparatus, and reported to the network controller in a wireless network. 将从每个接入点接收的信号的功率与该信号的已知传输功率进行比较,并且计算在用户设备与接入点之间传输的信号的功耗(步骤26)。 Known transmission power from the received signal point of each of the input power signal is compared, and calculates the power consumption signals transmitted between the user device and the access point (step 26).

[0036] 然后,如参照接入点之间的传输所述,关于平均功耗对用户设备的所确定功耗进行归一化并在图4中示出(步骤28)。 [0036] Then, as described with reference to the transmission between the access points on the determined average power consumption of the user equipment power consumption normalized and shown (step 28) in FIG. 4.

[0037] 然后,归一化后的用户设备功耗用于计算每个接入点的相关值(步骤30)。 [0037] Then, after the user equipment power consumption for calculating the normalized correlation of each access point (step 30). 计算出的相关是用户设备的功耗与无线网络中一个接入点和其他接入点的功耗之间的相关,其中用户设备可以从接入点的集合接收信号并向其传输信号。 Between one access point and other access points related to power consumption, and wherein the user equipment may set its transmission signal received from the access point signal calculated correlation power consumption of a user equipment in a wireless network. 相关值可以例如利用下面等式来计算: Correlation value may be calculated, for example, by the following equation:

[0038] [0038]

Σ 处-(Σ4Σ7) Σ at - (Σ4Σ7)

相关= Ν Related = Ν

Σ^2- Σ叫Ση Σ ^ 2- Σ called Ση

WVN )人W VW Jy WVN) people W VW Jy

[0039] 其中 [0039] in which

[0040] N为接入点的数目 [0040] N is the number of access points

[0041] X为用户设备与接入点之间的归一化后功耗 [0041] X is normalized between the user equipment and the access point of a power

[0042] Y为接入点与对其进行用户测量的等同接入点之间的归一化后功耗 [0042] Y is normalized between the access point and the access point equivalent to its consumption measured by the user

[0043] 一旦确定每个接入点的相关值,就可以例如通过按传输强度的百分比或从O到1(未示出)重新调整所有值来对相关值进行归一化。 [0043] Once the correlation values ​​for each access point is determined, for example, may re-adjust all intensity values ​​or percentage transmission (not shown) from O to 1 for a normalized correlation value.

[0044] 然后,可以将每个接入点的矢量位置与该接入点的归一化后相关值相乘,以给出接入点的位置的加权矢量(步骤32)。 Weight vector multiplied correlation values ​​[0044] Then, the position vector can each access point with the access point is normalized to give an access point position (step 32). 然后,加权矢量可以彼此相加以给出用户设备的位置估计(步骤34)。 Then, the weight vector may be the position estimate to each other (step 34) given by the user equipment.

[0045] 可以在任意时间计算估计,例如在用户设备连接到网络时、在预定时段或者在用户或控制器手动触发位置估计计算时计算估计。 [0045] The estimate may be calculated at any time, for example, when a user connected to the network, or when the calculation is triggered in the user location estimation calculation or estimate the manual controller in a predetermined time period.

[0046] 在本发明的可替代实施例中,无线实施例进一步包括一个或多个传感器。 [0046] In an alternative embodiment of the present invention, a wireless embodiment further includes one or more sensors. 传感器被配置为从接入点接收传输并测量所接收传输的功率。 Sensor is configured to receive transmissions from the access point and the measured power of the received transmission. 矩阵不仅包括与接入点之间的信号发生的功耗相关的数据,而且包括与来自每个接入点的传感器所接收的信号发生的功耗相关的数据。 Matrix includes not only the power consumption associated with the data signals between the access points, but also the power consumption associated with the sensor data from each access point of the received signal occurs.

[0047]另外,除了接入点所接收的信号之外,可针对传感器所接收的信号如上所述地计算相关值,从而计算归一化后的相关值。 [0047] Further, in addition to the access point the received signal, the correlation value may be calculated for the signal received by the sensor as described above, to thereby calculate correlation values ​​normalized. 因此,可以参照较大数目的加权位置来确定用户设备的位置,从而进一步增加精度。 Thus, it is possible to determine the location of the user equipment with reference to a larger number of weighted position, thereby further increasing precision. 传感器可以是能够确定功率,并且根据需要能够确定传感器所接收的信号的到达角度的任意合适设备。 The sensor may be able to determine the power, and any suitable device capable of determining the angle of arrival of the signal received by the sensor as needed.

[0048] 为了最小化网络中传输的数目,传感器优选仅将功率的测量结果传输给网络控制器或估计用户设备位置的设备,而不将信号传输给接入点或传感器以测量例如从接入点接收的信号的功耗。 [0048] In order to minimize the number of network transmissions, the sensor preferably only the measurement result to a transmission power controller or the network user equipment location estimating apparatus, without transmitting a signal to the access point or the access from a sensor to measure e.g. point of the received signal power. 然而,如果需要,则传感器可以被配置为将信号传输给其他传感器、接入点和/或用户设备以使其他传感器、接入点和/或用户设备能够测量传感器所传输信号的功耗。 However, if desired, the sensor may be configured to transmit signals to other sensors, access point and / or other sensors so that the user equipment, an access point and / or user equipment capable of measuring the power consumption of the transmitted sensor signal.

[0049] 在又一实施例中,相关值可以与诸如到达角度三角测量或三边测量之类的其他位置估计方法结合使用。 [0049] In yet another embodiment, the correlation value may be such as angle of arrival triangulation or trilateration other position estimation method or the like in combination. 例如,可以选择三个接入点的与用户设备信道损耗频谱最大相关的相关值,并且可通过将路径损耗转换成距离来估计从接入点到用户设备的距离。 For example, three access points may be selected with a user equipment loss spectrum channel correlation maximum correlation value, and by converting into a distance the path loss from the access point to estimate the distance to the user equipment. 一旦估计了距离,就可以通过选择与接入点的距离交叉的点来确定用户设备的位置。 If the estimated distance, the distance to the point by selecting the access point to determine the location of the intersection of the user equipment.

[0050] 可替代地,如果该方法与到达角度三角测量估计结合使用,则可以利用如在第一和第二实施例中所述的方法来估计用户设备离接入点的近似距离。 [0050] Alternatively, if the method of estimating the angle of arrival triangulation used in combination, it is possible to estimate the approximate distance of the user equipment from an access point in the method of the first embodiment and the second embodiment in use. 还在接入点处确定来自用户设备的信号的到达角度。 Also at the access point determines the angle of arrival of the signal from the user equipment. 然后,将用户设备的位置估计为用户设备在到达角度的方向上离接入点的位置的距离。 Then, the position of the user equipment estimates the distance from the position of the access point to the user equipment in the direction of the angle of arrival.

[0051] 可选地,可将置信值指派给位置估计。 [0051] Alternatively, the confidence value may be assigned to the estimated position. 例如,在利用第一实施例中描述的方法确定位置时,置信值可以是用于确定用户设备位置的每个接入点的功耗测量结果的百分比误差之和。 For example, in determining the position using the method described in the first embodiment, the confidence value may be used to determine the percent error power sum of the measurement results for each access point of the user equipment location.

[0052] 或者在结合如上所述的三边测量方法使用该方法时,线可能在某点处不交叉,因而可以限定用户设备可位于其中的区域。 [0052], or a trilateration method when used in conjunction with the method described above, the line may not intersect at some point, the user equipment can thus be located in a region defined therein. 区域的尺寸与用户设备位于估计将位于的精确位置的置信成反比。 Area size and located in the user equipment estimate the confidence will be inversely proportional to the precise location is located. 相对应方法可以在结合到达角度方法使用该方法时被使用,由于到达角度的估计误差,如果与多于一个接入点一起使用,则将估计用户设备所位于其中的区域。 Corresponding method may be used when combined method using the arrival angle, since the angle of arrival estimation error, if used with more than one access point, wherein the region of the user device is located will be estimated.

[0053] 如本领域技术人员将理解的那样,可以利用任意合适的方法来计算无线网络中两个接入点之间的信号传输的功耗。 [0053] As those skilled in the art will appreciate, the power consumption may be calculated from signals transmitted between the two wireless network access points by any suitable method. 另外,可以利用任意合适的数据(例如时延谱)而不仅仅是功耗数据来计算相关系数。 Further, using any suitable data (e.g., delay profile) rather than the power consumption data to calculate the correlation coefficient.

[0054] 功耗可以被测量且被存储在任意合适的单元中,例如其可以利用诸如分贝或线性功率单元之类的对数尺度来测量。 [0054] and the power consumption can be measured by any suitable means, for example, it may be measured using a logarithmic scale of decibels, such as a linear or a power storage unit or the like. [0055] 位置估计可以在位于无线网络中的设备中或连接至无线网络中的设备的任意合适设备处来执行。 [0055] The location estimate may be located in a wireless network devices connected to any suitable device or the wireless network device to perform. 例如,其可以在网络控制器或位于网络外部的独立服务器中执行。 For example, it may be performed in the network controller or located outside the network independent server. 另外,如本领域技术人员将理解的那样,该方法的不同部分可以在独立设备中执行,例如用户设备可以计算传输的功耗,但相关值的计算可以在网络控制器中执行。 Further, as those skilled in the art will appreciate, different portions of the method may be performed in a separate device, for example, a user can calculate the power transmission device, but calculates correlation values ​​may be performed in the network controller.

[0056] 然后,功耗可以存储在表格中或以任意其他合适的方式存储,以使其能够稍后被访问。 [0056] Then, power consumption can be stored in the table memory or in any other suitable manner, so that it can be accessed later. [0057] 可以通过任意合适的方法,例如通过按传输强度的百分比重新调节每个接入点的相关值来对相关值进行归一化。 [0057] can be, for example normalizing the correlation value by any suitable method percentage transmission intensity rescaling correlation value for each access point.

Claims (14)

1. 一种估计用户设备在无线网络中的位置的方法,所述无线网络包括多个接入点,所述方法包括以下步骤: i)确定所述用户设备与所述多个接入点中的一个接入点之间的信道损耗; ii)计算所述多个接入点中的至少一个接入点的相关值,接入点的所述相关值为以下信道损耗之间的相关性的度量:所述用户设备与所述多个接入点中的至少一个接入点之间的信道损耗,和所述接入点与所述多个接入点中的每个接入点之间的信道损耗;并且iii)根据至少一个接入点的已知位置和所述至少一个接入点的所述相关值,估计所述用户设备的位置。 A location of a user equipment in a wireless network estimation method, the wireless network comprising a plurality of access points, said method comprising the following steps: i) determining that the user equipment and the plurality of access points a channel between the access point loss; correlation value between the correlation ii) calculating said plurality of access points at least one access point, the access point correlation value of the channel loss between the user equipment and the access points at least one of channel loss between the access point and the access point and the access points each access point: measurement channel loss; and iii) according to at least one access point and the known location of the at least one access point of the correlation value, the estimated location of the user equipment.
2.根据权利要求I所述的方法,进一步包括如下步骤:对所述接入点和所述多个接入点中的每个接入点的计算出的信道损耗进行归一化以确定归一化后的接入点信道损耗,并且对所述用户设备与所述多个接入点中的至少一个接入点之间的信道损耗进行归一化以确定归一化后的用户设备信道损耗,其中所述相关值为归一化后的接入点信道损耗和归一化后的用户设备信道损耗的度量。 2. The method of claim I, further comprising the step of: the calculated channel loss plurality of the access point and the access points each access point to determine the normalized return after a point of access channel loss, and was normalized to determine a user equipment channels after normalizing the channel loss between the user equipment and the access points at least one access point loss, wherein the user equipment associated channel metric value after the normalization and the access point channel loss normalized loss.
3.根据权利要求I或2所述的方法,其中估计所述用户位置包括在估计所述用户设备的位置之前对所述相关值进行归一化。 3. I or the method according to claim 2, wherein estimating the position of the user comprises the normalized correlation value before estimating the position of the user equipment.
4.根据权利要求3所述的方法,其中估计所述用户设备的位置包括将每个接入点的矢量位置乘以该接入点的归一化后相关值,并且将加权后的矢量位置一起相加。 4. The method according to claim 3, wherein the estimated position of the user equipment comprises the vector position of each access point is multiplied by a normalized correlation value after the access point, and the weighted vector position added together.
5.根据任一前述权利要求所述的方法,包括确定所述用户设备与所述多个接入点中的一数目的接入点之间的信道损耗的集合,并且通过测量信道损耗的所述集合和信道损耗的另一集合来计算相关值,信道损耗的所述另一集合为所述接入点与所述多个接入点之间的信道损耗的集合。 5. The method according to any preceding claim, comprising determining a set of channel loss between the user equipment and the plurality of access points in a number of access points, and by measuring the channel loss set and said another set of channel loss by calculating a correlation value of the channel loss between the further set is the set of the access point and the access point of the plurality of channel loss.
6.根据权利要求5所述的方法,其中所述多个接入点中的所述数目的接入点由包括以下各项的组中的一个组成:位于使得其能够从所述用户设备接收信号的位置的所述接入点、与所述用户设备信道损耗具有最大相关值的所述数目的接入点。 6. The method according to claim 5, wherein said plurality of access points in the number of access points by one of the following group of compositions comprising: positioned such that it is capable of receiving from the user equipment the access point of the position signal, the user equipment having a loss channel number of access points of said maximum correlation value.
7.根据任一前述权利要求所述的方法,包括计算所述用户设备与接入点之间的一数目的相关值,每个相关值为所述用户设备与一个接入点之间的相关性的度量。 7. A method according to any one of the preceding claims, comprising a number of computing a correlation value between the user equipment and the access point, each associated correlation value between the user equipment and an access point of the measure.
8.根据任一前述权利要求所述的方法,其中所述无线网络进一步包括一个或多个传感器,并且接入点的所述相关值为以下信道损耗之间的相关性的度量:所述用户设备与所述多个接入点中的至少一个接入点之间的信道损耗,和所述接入点或传感器与所述多个接入点中的每个接入点之间的信道损耗。 8. The method according to any preceding claim, wherein the wireless network further comprises one or more sensors, and a measure of a correlation between the access point correlation value less channel loss: the user channel loss between the device and the plurality of access points in at least one of channel loss between the access point and the access point or sensor and the plurality of access points each access point .
9.根据任一前述权利要求所述的方法,进一步包括针对用户位置的所述估计计算置信值的步骤。 9. The method according to any preceding claim, further comprising the step of calculating a confidence value for the user's position estimate.
10. 一种被配置为估计用户设备在无线网络中的位置的装置,所述无线网络包括用户设备和多个接入点,所述装置被配置为: i)确定所述用户设备与所述多个接入点中的一个接入点之间的信道损耗; ϋ)计算所述多个接入点中的至少一个接入点的相关值,接入点的所述相关值为以下信道损耗之间的相关性的度量:所述用户设备与所述多个接入点中的至少一个接入点之间的信道损耗,和所述接入点与所述多个接入点中的每个接入点之间的信道损耗;并且iii)根据至少一个接入点的已知位置和所述至少一个接入点的所述相关值,估计所述用户设备的位置。 10. A user equipment device configured to estimate the location in a wireless network, the wireless network comprising a user equipment and a plurality of access points, the apparatus is configured to: i) determining that the user equipment and the channel loss between a plurality of access points the access point; the correlation value ϋ) calculating a plurality of access points at least one access point, the access point correlation value less channel loss measure of a correlation between: the user equipment and the access points at least one of channel loss between the access point and the access point and the each of the plurality of access points channel loss between the access point; and iii) according to at least one access point and the known location of the at least one access point of the correlation value, the estimated location of the user equipment.
11.根据权利要求10所述的装置,其中所述装置为网络控制器。 11. The apparatus according to claim 10, wherein the device is a network controller.
12.根据权利要求10或11所述的装置,其中所述装置进一步包括被配置为接收路径所接收信号强度的测量结果的输入设备,并且使用所接收信号强度的所述测量结果以计算信道损耗。 12. The apparatus according to claim 10 or claim 11, wherein said apparatus further comprises a measurement result configured to route received signal strength of the received input device, and using the measurement result of the received signal strength to calculate a channel impairments .
13.根据权利要求10至12中任一项所述的装置,其中所述装置进一步包括接入点和所述网络中每个接入点与所述多个接入点之间的信道损耗的数据库。 13. The apparatus 10-1 according to any of claim 12, wherein said apparatus further comprises a network access point and the channel between the access point and each of the plurality of access points loss database.
14. 一种存储在计算机可读介质上的计算机程序,当在装置上执行时,该计算机程序使所述装置执行以下步骤: i)确定所述用户设备与所述多个接入点中的一个接入点之间的信道损耗; ϋ)计算所述多个接入点中的至少一个接入点的相关值,接入点的所述相关值为以下信道损耗之间的相关性的度量:所述用户设备与所述多个接入点中的至少一个接入点之间的信道损耗,和所述接入点与所述多个接入点中的每个接入点之间的信道损耗;并且iii)根据至少一个接入点的已知位置和所述至少一个接入点的所述相关值,估计所述用户设备的位置。 14. A computer program stored on a computer-readable medium, when executed on the device, the computer program causing the apparatus to perform the following steps: i) determining that the user equipment and the plurality of access points channel loss between an access point; a measure of correlation between the correlation value is a correlation value less channel loss ϋ) calculating a plurality of access points at least one access point, the access point : between the user equipment and the access points at least one of channel loss between the access point and the access point and the plurality of access points for each access point channel loss; and iii) according to at least one access point and the known location of the at least one access point of the correlation value, the estimated location of the user equipment.
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